John j



(No Model.)'

J. J. DUNBAR & H. HOLLOWAY.

BOB SLED.

No. 366,716. Patented July 19, 1887.

Illllllllllllllll UNITED STATES PATENT OFFICE.

JOHN J. DUNBAR AND HERMAN HOLLOWAY, OF GUNNISON, COLORADO.

BOB-SLED.

SPECIFICATION forming part of Letters Patent No. 366,716, dated July 19,1887.

Application filed May 7, 1887. Serial No. 237,468.

To aZZ whom it may concern:

Be it known that we, JOHN J. DUNBAR and HERMAN HOLLOWAY, citizens of theUnited States, residing at Gunnison, in the county of Gunni'son andState of Colorado, have invented a new and useful Improvement inBob-Sleds, of which the following is a specification.

Our invention relates to improvements in bob-sleds, consisting in acertain novel construction and arrangement of parts for service, fullyset forth hereinafter, and specifically pointed out in the appendedclaims.

In the drawings hereto annexed, Figure 1 is a side view of a sledprovided with our improvements. Fig. 2 is a central longitudinalsection. Fig. 3 is a transverse section on the line a: a: of Fig. 1.

Referring to the drawings by letter, A des ignates the runners of thesled, B the roller or brace at the front ends of the said runners, and Othe trussed knees secured to the said runners and having rounded upperends.

D D designate side plates on the outer and inner sides of the saidknees, and G is the crossbar or bench of the sled, to the under side ofwhich at each end is secured a plate, II, having the downwardlyturnedends, forming ears I I, provided with openings or bearings i i, to alignwith an opening or bearing, (1, formed in the side plates, D, and theupper end of the knee, and through the said aligned hearings is passedthe pivot-bolt K, thus pivoting the bench on the knee.

L represents a trussed or double brace having the lower extremities ofthe arms secured to the members of the t-russed knee, and having theupper end passed through a staple or eye, N, on the under side of thebench. It will be seen that the said brace, although serving to supportthe bench, will not interfere with the rocking motion thereof.

M represents a brace-rod secured at the front end to the bolt whichsecures the round in place and at the rear end to the pivot-bolt K,causing the strain upon the k nee (in drawing upon the sled to move it)to be equalized.

\Ve are aware that pivoted or rockingknees have heretofore been made,and we do not,

(No model.)

therefore, claim this; but the means which we provide for bracing theparts and equalizing the strain are ofgreat importance, giving rigidityto the entire frame, and are important features in the invention; also,the peculiar construction of the head of the knee, with the side platesand the cars secured to the under side of the bench, and having apivotbolt passed through aligned openings therein and the said head ofthe knee, is very simple, strong, and effective.

Having thus described our invention, we claim- 1. As an improvement inbob-sleds, the trussed knee, side plates, D, bearings in the said platesand the upper end of the knee, bench G, having the plate H on the underside, provided with the depending ears I Land the bolt K, to passthrough the said ears and the bearing in the upper end of the knee,substantiall y as described.

2. As an improvement in bob-sleds, the trussed knee, bearing (1 in theupper end, bench G, having the depending cars I, to pass on oppositesides of the said knee, bearings z in the said ears, bolt K, to passthrough the bearings i and (Z, the eye or staple N on the under side ofthe bench, and the double brace L, passing at the upper end through saideye and having the lower ends of the arms thereof secured to the trussedknee, substantially as and for the purpose set forth.

3. As an improvement in bob-sleds, the runner A, knee 0, bearing d inthe upper end, bench G, having the depending ears I, bolt K, to passthrough the said ears and the bearing (1, and the brace-rod M, securedat the front end to the front end of the runner and at the rear end tothe bolt K, substantially as and for the purpose set forth.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in presence of two witnesses.

JOHN J. DUNBAR. HERMAN HOLLOW'AY. \Vitnesses:

IRA BROWN, MIKE Anon.

